The SHADOW HQ is the main base of operations for MIST and SHADOW. It is located in Tower Bridge, London. The building consists of three sections. At the bottom, there is a large and circular glass cylinder, 3 floors high. The other two sections are called the Motte and the Bailey. The Motte, is on top of one side of the cylinder, and is a 50 storey tall, concrete oval prism with a thin strip of glass on both edges. The Bailey, is a taller, glass rectangle, which says SHADOW, and the letters are underneath each other. At the top of the Motte, there is a helicopter pad, and at the top of the Bailey, there is a large spire for communications. Grounds were planned, but Lance suggested that they would not be built.
<gallery type="gallery"> File:Shadowhq.jpg|The SHADOW HQ after construction. The open ground from the plans could not be built. File:SHADOWHQ1.jpg|Rendered front of the SHADOW HQ (pre construction). File:SHADOWHQ2.jpg|Rendered back of the SHADOW HQ (pre construction). File:SHADOWHQ4.jpg File:SHADOWHQ6.jpg